[en] The logarithmically normal distributions of exposure doses of personnel dealing with exploitation of radiosotope gamma plant or carrying out flow detection using portable and mobile gamma-flow detectors, are presented on the basis of a large number of statistic data. The confidential intervals of personnel exposure dose values and the probabilities of exceeding maximum permissible values have been calculated. The reliability of the results obtained has beed confirmed by checking the reading accuracy of personnel dosemeters used for moditoring in radiation technology. The checking was carried out within the limits of international comparison of the accuracy of measuring personnel gamma radiation doses. The dependencies of a dosemeter error on the exposure dose value are presented. It is shown that exposure dose of personnel dealing with radiation engineering do not exceed maximum permissible values taking into account the measurement errors